Concemtrating process



Jan. 30, 1923 E. MERRELL.

CUNCENTRAUNG PROCESS.

HLED AUG. 2| ISIB.

Patenten Jan. 3B, 1523.

rino eroine N GEHTET1T5G PROCESS.

pplleatior. mail August .f 'l. flexial ne. 247,955.

invente new and useful Improvements in,

Conoentrating Processes. of which tlm foilowing, taken in connectionwith the nocum- `pouf/ing drawings, is a full, clear, und exactdescription. l

This invention relates to certain improvemonts in concantrting recessand apparu tus for carrying out tie Home.

The object; of'tlxe invention is to produc-e f1.5 :in ellicient proc-assfor procluoing concentrated or evaporated. products of milla and similarsubstances which are sub'ecl; to ma teriol injury by improperapplication of harmful tmpernturesf In other -Womls, the production oftrotedmillr or similar products in which the natural properties n thesolids have not been materially filtered during the evaporatingprocess.

(lther objects and advmitages veinte tn the speoiic features of theprocess, as will more 'fully iippem' from the following: flesc'riptiontaken in connection with tlxeucco 1-- pnnying drawings, in which- Figure1 is ,an elevation partly in section., of .m apparatus adapted for'carrying ouf the process beminA Figure i is a. cross section on line 22, Figure l.

Tha apparatus, us shown. comprises a rin sl1aped casting 1 ofsubsitnntially U-s ripe cro sectionhaving. in this illustration, asei-ncl ring-shaped casting 2fsecured to the under side thereof, as by40 bolts -3.

The cesti -2. carries a janine?. -3-, preferably o `cylindrical formand. inging its lower emi closed by plate 4K- ,ll ithxn the jacket i3-an annular oontainer -i-f The container muy, us illustrated, be formedvof vertical conntric walls -5 and -3 formed of sheet metal or similarmaterial and un annular bottom mill iw The imm-.wall or cvlinde'r #-5-7may be closed at, its upper and; ,as bythe. upwardly tapered or conicaltop Flhavin at. its central portion n bearing -9- for t le shaft 0-. D

The uppozl um: :if the U-sliupe 'casting -lcarries a ylinclricnl section-11- of silent metal or other suitable material. with. ii: tbe upper endof which ih srrrurerl u usb im; 1'2- formi-zi for inlerlucking engin;nient with the :'up lllof u vapor com The wu l G- of the annular onianerprefernbljp' extends Home. lis-tance above the casting -lso that `dtrough -15- is foi-med between the wall 6 and the section -llfor thereception of the concentrated liquu overflowing from the annularcontainer.

The casting -12 carries n suitable baille -l':` having a central opening--1H to permit the par-:Sage of vapor as hereinafter described. Tilebaille may be sernned to the casting in any suitable way to permit itsremoval. :1:4 by screws or otherwise.

. Within the annular container is positioned a lsllitabll rotary beatermounted upon :mil artuuted by the shaft l(J-. This heater comprises acasting -ll. mounted on the shaft Ii0- und formed with n series of, inthis instance twelve., radiating arms, euch ulm carrying o verticallydisposed paddle or blade -19- of substantially the sume width n.9 tberadial width of th annular container and extending from die bottomthereof to a'poinl. prefmily slightly above *the cylindrical wall -6-.

The lower ends of these blades or paxicllos are preferably connected,togntber at their inner :md outer edges by vom-entri@ riiws -20- anfl--2I, respectively, to adel5 rigidity to the structure.

-Tlie upper ends: of the blades or puddles -l9- cornv a, ring-shapedplate -23- Which may ne secured thereto in any suitable manner, and uponthis plate are mount.- ed a series of supports -24- for a hood -5-, saidhood spaced vertically u shout distance from the upper surfu of thepluto anti proviilexl with an inwardly tapered portion -26- terminntipgin u vertical Harige -27 rotating within the opening in t e barile 1'-.

The shaft -10- may carry a socond baille -28-- arranged in alignmentwith the oponcondensing chamber ing in the plate -23 to prevent. thedirect pasmge of vapor through the opening in said plane to the vaporcondensing apparatus. i

The shaft -10- mny, as shown, be removubl keyed to-e soclr'et -JZSL-containing :i spring --30h for resiliently holding the she ft in contactwith bearing This socket -29- may carry an oil or g'reese cup B0 adoptedto collect oil or other foreign matter that may Bow from the packedjoint 31- for shaft -32, of which the socket -29- forms 1m integral PmUpon the shaft -32- is mounted a suitable beveled gear 3H-l forcooperation with a second beveled gear -34- carried by frurneworlf -35-and driven through any suitable connections, as by pulley Thisconstruction may be of ordinary and wall-known form.

The vapor condensing `apparatus I4- embodies the usual condensingchamber 457- containing4 spray pipe 3S-- yund outlet -B9-- for water,the outiet being connected to my suitable device permitting maintenanceof vacuum in the vapor condensing chamber-` The co. -13,-, as shown, muybe. provided witli'i un inwnrdlr projecting flung@ -40 inclined upward yto form u trough discharging into the vapor 'condensing upparut-us forthe reception of oil or other foreign n mtter that muy he thrown fromthe cu he 'evaporutingz chamber und the vapor including the cup -l3 arerelatively movable toward und ,from euch other to permitI urce to theinterior of the' apparatus und withdrawal of the beater when the baille-l7 is removed.

Steam or other heating fluid muy be ndmitted to the chamber formed hythe jacket -3- and the walls of the nnnulur concentrating chamberthrough any suitable openm notl herein shown or described, und a.

suitable condensution'outlet -41- may be provided und muy, if desired.be trapped in en suitable manner.

lire milk or other liquid may he coutinuonsly supplied to the unnnlurconcentrating chamber through Vipe -12- und the annu lar body of liquidwithin the :uinulur con ceutrutiur chamber is heuted bolli externallyund internally. und isstirred or mecham ruilv moved over the heatingsurfaces nt n desired rute of speed to effect the most :1dvantngeousresults, und the s eed is prefeu eblv suliicientli;V high so us to iepress t 1e centrol port-ion oi thc bod): of liouid'below the hearing-9-. while the edge portions thereof ure elevated sufficiently tooverflow into the trough l5- so that n continuous disrhzugre of theconcentrated liquid is effected E5 into sold trough and from the troughinto the tunk -43- which is connected h v pipe I-Jrl to thc vaporcondensing apparatus li-1 whereby tno same degree of vucuiun is producedin the tank us exists in the vapor condensm appurntus and thecommenti-:ating chamba-,1; 1ere y permitting a free discharge of theconcentrated liquid,

Continuous removal of the condensed liquid m`ey be elfected by means ofsuitable discharging up drums.

Preferaby t e inner wall om of the concentrating chamber is providedwith a partition 4-5 extending across said wall at the buse of theconical upper Jurtion to prevent heating of said conical portion,thereby insuring u complete covering of the heated surface with theliquid.

ll`he sepurution of the vapor from the liquid is hastened hy thestirring effected through the rotary beutel' und the va wf is separatedfrom the nnnulurbody of liquid :it the upper end of the saune unddischarged through the separating: apparat-us into the vii-porcondensing u pnrutus where it is immediutely coudcnseil. to produce highvuenuiu in the apparatus.

ily the term high vncunm as used in the specification und claims hereof.4Imeuu u vnf-nun.- o npwnrdso ei hteen (18") inches of mercury, undprefere ly in uctunlV metif-e l employ u vacuum of upu'uu s oftwenty-six (if') inches of mercury corre, spondiui,r io u milk vnporzngtemperature of up roxinniiely 130. i

Although l imvr' described one-particular process und series of steps usperuups irefcrnhle in crr'lviug ont my invention und one speciiicnppurutus us pcculiurly mlnpted for the purpose described, l do notldesire to iimit myself to the dctnils oi' eitl\ci"the process ornppurutns us various chunges and suhsitutions` muy he mudoy withoutdeparting from the spirit of thisA invention ns setforth in the appendedclaims.

' lVhut. l claim is;

l. The process of conccutrnting a substance oontuining liquid consistingin slieping the liquid in m1 annular body, heating the interior undexterior of the annuler body to u temperature sul'licientto vuporizeliquid constituents of the substance treated nt. the maintained pure,mechanically moving; the treated substance in n rotary dirertionlcontinuously supplying the substence to one end of the annuler body,continuously discharging the concentrated substunce from the oppositeend of said body, und subjecting the body of suhstnce to high vucuum.

2. The process of concentrating a. substuuce containing liquidconsisting in' sluipini:I the liquid in an :annular body, heating theinterior und exterior of the annular body L0 a temperature suliicient tovaporize liquid constituents of the substance treated ,alo

st the maintained pressure, mechanically moving the tre substance 1n arotary direction. continuo sl supplyin the sub-V stance to one end of te annu ar y, continuously discharging the concentrated substance fromthe opposite end of said body, separating the vapor from the body ofliquid at the discharge end of said body, and con densing the separatedvapor to produce hlgh vacuum in the space about the body of liquid.

The process of concentrating a substance containing liquid consistingfincontinuously introducing the liquid into one end of an annular containerhaving concentric annular treating surfaces, heating the interior andexterior surfaces of the annular body of liquid confined between saidannular treating surfaces to a, temperature sufficient to vaporizeliquid constituents of the substance treated at the pressure maintainedin the container, mechanicall moving the substance relatively to sai(treat= ing surfaces,l continuously discharging the' concentratedsubstance from the container, separating the vapor from the liquid atthe discharge end of the body of substance, and maintaining high vacuumin the container.

4. The process of concentrating a substance containing liquid consistingin continuously introducing the liquid` into one end of an annularcontainer having concentric annular treating surfaces, heating theinterior and exterior surfaces of the annular body of liquid confinedbetween said annula r treating surfaces to a temperature suicient tovaporize liquid constituents of the i substance treated at the pressuremaintained in the container, mechanically moving the substance mlatively to said treating surfaces, continuously discharging the concentratedsubstance from the container. separating the vapor from the liquid atthe discharge end of the body of substance, and condensing the separatedvapor to produce high vacuum in the container.

5. The "process of concentrating a substance containing liquidsconsisting in introducing the liquid into one end of a container havingan annular portion formed with concentric annular treating surfaces,heating the exterior and interior surfaces of the body of liquidconfined between said annular treating surfaces to a temperaturesufficient to vaporize liquid constituents of the substance treated atthe pressure maintained in the container, mechanically moving thesubstance relativel to said treating surface, continuousl disc argingthe concentrated substance rom the container, se arating the vapor fromthe liquid at t e discharge end of the body of substance, andmaintaniing high vacuum in the container.

v6. The process of concentrating a substance containing liquid consistinin introducing the liquid -into one end o a vertically arrangedcontainer having an annular ortion formed with concentric annulartreating surfaces, heating the interior and exterior surfaces of theannular body of liquid confined between said annular treating surfacesto a temperature sufficient to vaporize liquid constituents of thematerial treated at the pressure maintained in the container,mechanicall moving. the substance relatively to said treating surfaceand in a rotary direction within said container. separating the vaporfrom the liuid at the upperend of the body of liqui and condensing thevapor to produce high vacuum in the container. ln witness whereof I havehereunto se't my hand this 31st day Aof July, 1918.

OLIVER EDWARD MERRELL.

